Equations of Circles 2

Directions: Using the integers -9 to 9, at most one time each, fill in the boxes to create a circle and a point on the circle with the point being as close to the origin as possible.


How can you use the values being subtracted from x and y to adjust where the circle is?


There are many potential answers but all will come from a circle with a radius of 5 units. The closest point to the origin found so far is 2 units away. Here’s one example:
(x – -5)^2 + (y – -4)^2 = 5^2
Point on circle: (-2, 0)

Source: Robert Kaplinsky

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